EP 2572222 B1 20170621 - DESIGNING LENSES USING STRESS BIREFRINGENCE PERFORMANCE CRITERION
Title (en)
DESIGNING LENSES USING STRESS BIREFRINGENCE PERFORMANCE CRITERION
Title (de)
ENTWURF FÜR LINSEN MIT EINEM LEISTUNGSKRITERIUM FÜR SPANNUNGSDOPPELBRECHUNG
Title (fr)
CONCEPTION DE LENTILLES À L'AIDE D'UN CRITÈRE DE PERFORMANCES DE BIRÉFRINGENCE DE CONTRAINTE
Publication
Application
Priority
- US 78452110 A 20100521
- US 2011035737 W 20110509
Abstract (en)
[origin: US2011288824A1] A method for designing an imaging lens having reduced susceptibility to thermally-induced stress birefringence, the imaging lens having first and second groups of lens elements located either side of an aperture stop, the method comprising: defining a set of lens design attributes; defining a set of lens performance criteria including a thermally-induced stress birefringence performance criterion; defining a first set of candidate glasses having a negligible susceptibility to thermal stress birefringence and a second set of candidate glasses having at most a moderate susceptibility to thermal stress birefringence; selecting glasses for lens elements that are located adjacent to the aperture stop from the first set of candidate glasses; selecting glasses for the remaining lens elements from the first or second sets of candidate glasses; and using a computer processor to determine a lens design for the imaging lens.
IPC 8 full level
G02B 13/16 (2006.01)
CPC (source: EP US)
G02B 7/028 (2013.01 - EP US); G02B 13/16 (2013.01 - EP US); G02B 13/22 (2013.01 - EP US)
Citation (examination)
KEITH B DOYLE ET AL: "Stress birefringence modeling for lens design and photonics", OPTICAL SENSING II, vol. 4832, 1 December 2002 (2002-12-01), 1000 20th St. Bellingham WA 98225-6705 USA, XP055305138, ISSN: 0277-786X, ISBN: 978-1-62841-971-9, DOI: 10.1117/12.486447
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2011288824 A1 20111124; US 8504328 B2 20130806; CN 102906616 A 20130130; CN 102906616 B 20150304; EP 2572222 A1 20130327; EP 2572222 B1 20170621; JP 2013531806 A 20130808; JP 5731636 B2 20150610; WO 2011146273 A1 20111124
DOCDB simple family (application)
US 78452110 A 20100521; CN 201180025303 A 20110509; EP 11719982 A 20110509; JP 2013511214 A 20110509; US 2011035737 W 20110509